Baker&#39;s oven



, Aug. 23,1927.

c. BROWN BAKERS OVEN;

Filed Aug. 31. 1926 3 Sheets-Sheet 1 Aug. '23, 1927. 1,640,333

C. BROWN BAKERS OVEN Filed Aug. 51. 1926 3 Sheets-Sheet 2 cw. F

Aug. 23 1927.

c. BROWN BAKER S OVEN Filed Aug. Sll

1926 3 Sheets-Sheet 3 W T a sprocket wh'eelslt', 15.

?ntented Am. 23; 1927.

warren stares 1,640,333 rAT ENr-oFFICE.

' CAMPBELL BROWN, 01? BELFAST, IRELAND.

.IBAKERS OVEN.

Application filed August 31, 1926, Serial No.

This invention relates .to bakers ovens of the kind in which there isarranged an endless chain of carrying members, such as plates, trays orshelves and constituting a conveyer for articles intended to be cookedor heated, the said carrying members being continuously movable bydriving means such as endless chains. or belts,.and having means bywhich they are normally maintained horizontal with the same side alwaysuppermost.

The object of the inventionis to provide in an oven of the kind referredto a conveye'r which will be driven by means, located externally of theheated Zone of theoven, and means by which the apparatus can beconverted for use as a travelling hotv plate.

The invention is exemplified in the com bination and arrangement ofparts shown in the, accompanying drawings and described in cation;

' Fig. 6 is a longitudinal section of a further modification. v c ISimilar reference characters denote similar or corresponding partsthroughout the several views. 5

Referring to Figs. 14, the conveyer there in shown comprises an endlesschain of v carrying members orplates 10, each of which is secured at itssides to a pair of opposed blocks 11. constituting units of two seriesof blocks adapted to slide along guideways in the side wallsof the oven.Each block 11 connected to one of a pair, of driving chains 12, arrangedalon'g'the sides of the oven err ternally thereof, by means ofa-spindle'13 and 13 which is rigidly secured to its block 11 near oneend thereof, but is pivotally. mounted in the relative chain 12.

Each of the driving chains 12 wraps two I The driving sprocket wheels 1%are carried by shafts 16 'jour'rialled 132,810, and in Great BritainAugust 4, 1925;

in bearing brackets 17, and the sprocket wheels-15 are carried byshafts. 16" jouralled .in bearing brackets 17 which are fixed on thewalls of theoven. The sha ts 16 are secured to gear wheels 18, which'aredriven in unison by a rotary shaft 19 also journalled in the brackets 17and carrying gear wheels 20,- which mesh with gear wheels '21 meshing,in turn, with the gear wheels 18.

The shaft19' may be driven from any suitable source of power suchas anelectric motor.

The walls of the oven are constituted by a casing consisting'of an upperarched portion 22 and a lower inverted arched portion 23 and a pair ofside walls 24 interposed between the sides of the casing 22, 28.Brackets'25 disposed on each side of the oven serve to support thecasing 22', 23, and the walls 24,-which are suitably spaced from thecasing 22, 23 to provide the guideways along which the blocks ll move..The upper and lower faces of the guidew'a-ys are formed with grooves26which are engaged by conformably shaped feat-hers 26 on the blocks 11 inorder to constrain the blocks to the guideways. A roller 27 isjournalled in each block 11 and rides along the grooves 26 in the lowerfaces of the guideways, each roller 2'7 serving to support the end oftherelative block 11 remote from'that supported by the relative'spindle 13or 13.

The blocks 11 are provided with ledges 11 to which the plates 10 aresecured.

Known means are provided for maintainmg the "plates 10 hor1zontal, withthe same side. uppermost, whilst passing from' one flight of the conveyer. to the other, and also for causing the plates to tilt when'they areclear of the oven in order to discharge the articles which they arecarrying. The form which such means takes...in the example illustratedwill now be described. v

Alternate spindles 13 are extended beyond the chains 12 and are rigidlyfixed to grooved lever arms 28, each plate 10 being connected to onesuch extended spindle l3 and lever arm 28. In passing with the chains 12from the upperto the lower flight, the groove in an arm 28 is enteredbyeither of two'pins 29 on one or other of two similar rotarydiscs 30rigid with theshafts 21 of the gear wheels 21. -The gear wheels 18 and21 are of equal diameters and the pins 29 are disposed at such a radiusthat they will stop i) arranged in pairs on the oven sides, and

guided into the upper guideways.

remain in the same horizontal'plane as the spindles 13 While the latterare moving around the driving rocket Wheels 14:. lVith this arrangement,the lever arms 28, bl site 11 and plates maintained horizontal whilstthe plates 10 are passing from the upper to the lower tligot. In orderto p-rmi the blOCl'IS to be maintained horil in this manner, the upperand lower C, eeivays are 'con ,deraibly widened where they mergesemi-circularlyinto one another, as shown at 31. The openings, whichotherwise Would'be let'trin the sides of the even between the walls 2%owing to such Widening, are closed by means of stationary cover plates32,

The plates 32 are senotched discs 33 cured to the Walls and the plates Ithe sides of the casing 22, 28. The plates 3.2 and 32 of each pair arespacedto .provide tor the spindles 13, 13 a passage 34- irom the up1 erto the lower guidevvay. The

. discs 33, which bear against the outer sides of the plates 32, 32*,are termed With peripheral notches 38 and are secured to the shafts 16so that they rotate in unison with the driving sprocket Wheels let. Thenotches 33 are so disposed as to receive the spindles 13, 13 when thelatter reach the periphery of the discs 38 and to move in unison withthese spindles Whilst they are moving around the semi-circular part oftie passage 34 the notches thus affording the minimum vopenings in theWalls of the oven for the passage of the spindles 13, 13 to the ex;-terior thereof.

ecured toeach side of the portion 22 of the casing above the'upperguideway at its open end, is a stop 35 which extends in a horizontalplanevertically above the lever arms 28. As theplates 10 are carried insuccession by the chains 12 clear of the oven, and t e blocks 11 leavetheir guideivays, each plate 10 is caused to tilt by gravity, until itslever arm 28 strikes the relative Thereafter, the relative spindles 13,13 are gradually carried upwards by the sprocket Wheels 15 until theplate 10 and blocks 11 assume once more a substantially horizontalposition, in which the blocks are A sliding door'S? is provided on thepen tion 22 or the casing at the end thereof Where the plates 10 enterthe oven, and a hinged door 38 bridges the space between the Walls 2%above the plates 10 Where they emerge from the oven. By opening the door37 or 38 articles of food on the plates 10 are permitted to enter orleave the oven.

The oven is heated by burners such as indicated atlb.

It may be desired to convert the apparatus for use as a travelling hotplate. To th s end, the portion 22 of he casing may and the casing 22,

32 (see ri ree s-es be provided with doors immediately above the levelof theupper flight of the conveyor and similar doors may befittedtothewalls 24. In the oven shown in 5, the portion 22 of thecasing and theWalls A are fitted With hingeddoors 39 capable of being swung into openpos1t1on' (indicated in dotted lines) by means of handles i0 which arefixed on the ends of the door spindles 41 projecting from the oven atthe char ing and discharging end thereof. In t. view the chains 12 areshown supported along With the blocks 11in the guide ays,

the blocks each being formed With ashoulnally thereof. 'This arrangementis 'illus-' trated in Fig. 6, in which the blocks 11 are shown passingout of the oven at both ends thereof.

The means for maintaining the plates horizontal are located clear of theadjacent' end of the oven vvhieh end is provided 7 i With a sliding door37 and a hingeddoor- 38 corresponding inconstruction and function Withthe doors 3? 'and-88, respectivelyp The discharge mechanism for the formof the nvention shown in Fig. 6 is identical with that lllustrated' 111Fig. l, the illustraessary. v y I g What I do claim as my invent-ion anddesire to secure by Letters Patent is 1. A bakers oven comprising casinghaving slotted side Walls constituting ,guide-, Ways, a series of blocksadapted to travel in said guideivays, an endless chain otoarryingmembers adapted to move in a circuitous" path through the interior ofthe oven, said carrying members being fixed between the 7 tion beingomitted as it is not deemed necblocks in opposite sidewalls, drivingmeans 2 located outside of the oven, means for pivotally connecting saidblocks to said driving means, and means co-actin'g with saidpivotalconnecting means for maintaining the said blocks andcarrying.membershort 'zontal Whilst passing from one level to anothen .7

2. A bakers oven comprising a leasing, having slotted side Wallsconstituting guide Ways, a series of'blocks in said guidevvays,

an endless chain of carrying members adapt, ed to move in a circuitouspath through the interiorof the oven, said carrying members i beingfixed between the blocks in, opposite side Walls,,driving means locatedoutside of the v oven, means for pivotally' connecting blocks tosaiddriving means, said carry clined position at one end oi the oven,and

means to limit this inclined :p'osition'ot the .carrying member, saidmeans serving to restorethe carryingmembers to horizontal position intheir .i'urther movement] 3. In a bakers oven comprising a casing,having an upper portion A d a lower portion, and a pair of side Wallsdisposed be tween the said portionsin spaced relation ship thereto, saidportions and side walls being supported by bracket-e, an endless chainof carrying members adapted to movein a circuitous path through theinterior of the oven, doors located in the sides of the oven upperportion and in said side Walls; a series of blocks operating betweensaid upper and lower oven portions and the side walls, said carryingmembers being fined between oppo site blocks in the side walls, doors insaid casing where the carrying members enter and leave it, and means fordriving thecarrying members located outside of the oven.

l. In a bakers oven, carrying members adapted to move in a circuitouspath through the interior of the oven, means arranged wholly exterior ofthe oven and operating longitudinally thereof and connected to thecarrying members for causing said members to move throughout saidcircuitous path n the interior of the oven, and supporting members torthe carrying means movable longitudinally of and walls of the oven.

5. In a bakers oven, side walls having guideways therein, carryingmembers adapted to move in a circuitous path in the interior otthe oven,blocks supporting said carrying members and cocperable with saidguideways'in the side walls of the oven for guiding the blocks andthereby the carrying members in movement, and endless chains arrangedimmediatelybeyond the oven and operating longitudinally thereof forconnection with said blocks for moving the latter longitudinally of theoven in said guideways.

6. A bakers oven comprising a casing including slotted side walls formedto provide guideways, carrying members adapted for travel in acircuitous path in the oven,blocks co-operating with the guideways andconnected to the carrying members to guide the latter in their movementthrough the oven, chains operating longitudinally of and immediatelybeyond the oven, each of said blocks being pivotally connected at oneend to the chains, means arranged at one end of the oven for maintainingthe carrying members in their horizontal position in movement from oneportion of the circuitous path to another, the path oftravel of thechains be ing extended beyond the opposite end of the oven to therebymove the blocks free of the guideways to permit said blocks andth'erebythe carrying members to be inclined to dis guided in the side charge thematerial on the carrying members, and means for thereafter restoring thecarrying members to their horizontal positions. p v

7, A bakers oven having side walls formed representguideways, a seriesof independent carrying members movable in a circuitous path in theoven, chains adapted tor'travel longitudinally jot and immediatelybeyond the oven, bloclis supporting the members and cooperating withtheguideways for guiding the travel in the oven, and connectionsintermediate said blocks and said chains.

' 8. A bakers oven having side walls formed to present guideways, aseries of independent carrying members movable in a circuitous path inthe oven, chains adapted for travel longitudinally of and immediatelybeyond the oven, blocks supporting the members and cooperating with theguideways for guiding the travel in the oven, connections intermediatesaid blocks and said chains, and means operatin wholly exterior of theoven for maintaining the carrying members in asubstantially horizontalposition during transition from one portion of the circuitous path toanother. i l

V 9. In a bakers oven, side walls formed of upper and lower portions andan intermediate portion spaced from the upper and lower portionstoprovide guideways, carrying members'movable in said guideways, theintermediate portion of the side Walls terminating short of the upperand lower portions to provide an extended space for the movement of theparts in the travel ot the carrying members from one guideway' to theother, and means for maintaining this eX- tended space covered whilepermitting move ment of the carrying members troin one guideway to theother.

10. In a bakers oven including sidewalls formed to provide longitudinalguideways,

blocks movable in the guideways, carrying members connected to theblocks, endless chains operating beyond the oven, connections betweenthe chains and blocks, the guidevvays" being interrupted in part tothereby provide an enlarged terminal space to permit of the travelof theblocks from one guidewayto the other, and means for covering theenlarged space, said means being movable with said connections.

' 11. In a bakers oven, including side walls formed to providelongitudinal guideways, blocks movable in the guideways, carryingmembers connected to the blocks, endless chains operating beyond theoven, connections between the chains and blocks, theguideways beinginterrupted in part to there-;

by provide an enlarged terminal space to permit otthe travel of theblocks from one guideway to the other, stationary cover plates on theWalls of the oven, and rotary cover plates closing said enlarged spaceand l plates.

moving with said vconnections, said rotary plates cooperating with saidstationary her being connected ,to opposing blocks opcrating in therespective guideways, endless chains operatlng" longitud nally of andimln-ediateiy beyond the oven, and means connecting said chains and saidblocks, the con nections between the chains and blocks being at the endsof the blocks remote from the rollers. i

Intestiinony whereof I my signature;

CAMPBELL B RoWn.

